US4347421A - Automatic pipe circumference welding apparatus - Google Patents

Automatic pipe circumference welding apparatus Download PDF

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Publication number
US4347421A
US4347421A US06/233,576 US23357681A US4347421A US 4347421 A US4347421 A US 4347421A US 23357681 A US23357681 A US 23357681A US 4347421 A US4347421 A US 4347421A
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US
United States
Prior art keywords
welding
pipe
arcuate frame
wire
truck
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US06/233,576
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English (en)
Inventor
Mutsuo Mukuda
Masahiro Murakami
Kazuo Aotsuka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumitomo Precision Products Co Ltd
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Sumitomo Precision Products Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP1867980U external-priority patent/JPS5914052Y2/ja
Priority claimed from JP2658980U external-priority patent/JPS56131990U/ja
Application filed by Sumitomo Precision Products Co Ltd filed Critical Sumitomo Precision Products Co Ltd
Assigned to SUMITOMO PRECISION PRODUCTS COMPANY LIMITED reassignment SUMITOMO PRECISION PRODUCTS COMPANY LIMITED ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: AOTSUKA, KAZUO, MUKUDA, MUTSUO, MURAKAMI, MASAHIRO
Application granted granted Critical
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Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
    • B23K37/02—Carriages for supporting the welding or cutting element
    • B23K37/0276—Carriages for supporting the welding or cutting element for working on or in tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/02—Seam welding; Backing means; Inserts
    • B23K9/028—Seam welding; Backing means; Inserts for curved planar seams
    • B23K9/0282—Seam welding; Backing means; Inserts for curved planar seams for welding tube sections
    • B23K9/0286—Seam welding; Backing means; Inserts for curved planar seams for welding tube sections with an electrode moving around the fixed tube during the welding operation

Definitions

  • the present invention relates to an apparatus for automatically welding the circumferences of pipes which are laid in horizontal positions so that they may be jointed.
  • TIG wedling apparatus As the welding apparatus of the above kind, there has been known in the art a tungstem inert-gas arc welding apparatus which is usually abbreviated to "TIG wedling apparatus".
  • This TIG welding apparatus is constructed, for example, of two arcuate frames, which are detachably connected at their two portions thereby to form a ring shape, and a welding torch, a wire feeder, a running truck, and clamping mechanisms, all of which are integrally attached to those arcuate frames.
  • the clamping mechanisms are used to clamp the outer circumferences of the pipes.
  • the running truck, and the welding torch and the wire feeder are mounted on the different arcuate frames so that they can be separated. With this construction, the welding operation is performed while the aforementioned running truck is being made to run in the circumferential direction.
  • the conventional apparatus thus constructed is not equipped with a shock absorbing mechanism for absorbing the vertical vibrations resulting from the roughnesses on the outer circumferences of the pipes and has a defect that the spacing between the leading end of the welding torch and the pipes cannot be maintained constant.
  • the clamping mechanisms of the conventional apparatus are of manual type so that they cannot enjoy an excellent working property and have a defect that they cannot be mounted in desired positions with ease.
  • the aforementioned running truck carries the welding torch, the wire feeder, a profiling unit and so on, but is so constructed as to perform the welding operation in one direction while being fed with only one wedling wire.
  • the torch, driving power supply cables, a cooling water hose, an inert gas hose and so on will wind themselves round the pipes.
  • the automatic welding operation is characterized to have a tendency that the bed width becomes small and the penetration becomes deep when the welding torch ascends whereas the bead width becomes large and the penetration becomes shallow when the torch descends.
  • Another object of the present invention is to provide an automatic pipe circumference welding apparatus which can be attached without any difficulty to a predetermined position on the outer circumference of the pipe.
  • Still another object of the present invention is to provide an automatic pipe circumference welding apparatus which can perform the multi-layered welding operations of excellent weldability in remarkably high efficiency.
  • the present invention is featured by the facts that the welding apparatus is equipped with a shock absorbing mechanism, that the clamping mechanisms are of electric type, and that two feeders for feeding two filler wires are disposed forward and backward of the advancing direction of the welding torch.
  • FIG. 1 is a partially broken-away front elevation showing one embodiment of a welding apparatus according to the present invention
  • FIG. 2 is a section taken along line II--II of FIG. 1;
  • FIG. 3 is a section taken along line III--III of FIG. 2;
  • FIG. 4 is a side elevation showing a clamping mechanism to be used with the welding apparatus of the present invention
  • FIG. 5 is a side elevation showing a welding unit to be used with the welding apparatus of the present invention.
  • FIG. 6 is a section taken along line VI--VI of FIG. 5;
  • FIGS. 7A to 7D are schematic views illustrating a series of procedures of attaching the welding apparatus of the present invention to a pipe to be welded.
  • FIGS. 8A and 8B are schematic views illustrating a multi-layered welding method.
  • Reference numerals 1, and 2 and 3 generally indicate a pipe to be welded, and two arcuate frames which are detachably connected at their two portions thereby to form a ring shape.
  • Numerals 4-1, 4-2 and 4-3 indicate a welding unit having a welding torch and so on and two welding wire feeders, respectively.
  • Numerals 5 and 6 generally indicate a running truck and two clamping mechanisms for clamping the outer circumference of the pipe to be welded, respectively.
  • the two arcuate frames 2 and 3 have their respective paired frame members 2-1 and 3-1 arranged in parallel and constructed into unitary structures by means of a plurality of spacer ribs 2-2 and spacer plates 3-2, respectively.
  • the arcuate frame 2 at the side of the running truck 5 is formed at both its trailing ends with engagement recesses 2-3 and 2-4.
  • a connecting rod 11 which is attached through two springs 10 to a setting handle 9 which in turn is pivotally connected to the other end of the aforementioned arcuate frame 3 in a manner to rotate about a pin 8.
  • the two frames 2 and 3 can be connected by fitting the connecting rod 7, which is integrally attached to the arcuate frame 3 itself, in the engagement recess 2-3 at the same side, by then fitting the connecting rod 11 made integral with the springs 10 in the engagement recess 2-4 at the same side, and by falling the setting handle 9 toward the pipe 1.
  • numerals 12 and 13 indicate guide rollers and handles, respectively.
  • the running truck 5 is mounted on the center portion of the arcuate frame 2 and is constructed such that its body 5-1 can be fitted between the front and rear frame members 2-1 of the arcuate frame 2 and carries drive motors 14, by which front and rear wheels 17 are independently driven through gears 15 and 16.
  • a single shaft 19 is rotatably supported by two bearings 18 which are disposed at the both sides, and two guides 20 attached to both the ends of that shaft 19 are slidably fitted in grooves 21, which are formed in the diametrical direction of the pipe 1 at both the sides of the arcuate frame 2, so that the truck body 5-1 is made integral with the arcuate frame 2.
  • the truck body 5-1 can partly slide in the direction of its height within the grooves 21 through the guides 20 and partly rotate about the shaft 19.
  • the fixture of the truck body 5-1 thus constructed is performed by interposing shock absorbing means such as four springs 23 between the upper surface of the truck and a horizontal plate 22, which is disposed in a horizontal position above the aforementioned shaft 19 while having both its end portions vertically movably fitted in the aforementioned grooves 21 of the arcuate frame 2, by receiving the upper surface of the aforementioned horizontal plate 22 upon two cams 25, which are fixed to the vicinities of the two ends of a shaft 24 rotatably disposed in a horizontal position above the arcuate frame 2, and by rotating the cams 25 by means of handles 26, which are fixed to the ends of said cam shaft 24, so that the horizontal plate 22 is pushed to force the wheels 17 of the truck body 5-1 into close contact with the outer circumference of the pipe 1.
  • interposing shock absorbing means such as four springs 23 between the upper surface of the truck and a horizontal plate 22, which is
  • the aforementioned cam shaft 24 is equipped at both its ends with two bearings 27, which are fitted in the grooves 21 of the arcuate frame 2, and is rotatably laid through bearings 29 upon an upper plate 28 which is fixed to the heads of the frame members 2-1 by means of bolts or the like.
  • the cams 25 are so shaped and positioned that the shock absorbing springs are compressed, if the handles 26 are fallen, e.g., to the right, as viewed in FIG. 1, and loosened if the handles 26 are fallen to the left.
  • numeral 28-1 indicates spacer bars.
  • each of the clamping mechanisms 6 for clamping the outer circumference of the pipe 1 to be welded is constructed such that clamp arms 6-3, in which a pair of parallel arcuate plates 6-1 are integrated with spacer pipes 6-2, have their leading ends pivotally carrying such guide rollers 30 as can turn on the pipe to be welded and have their other ends pivotally connected to both the ends of the frame members 2-1 by means of a pivot pin 31, such that a threaded rod 34 is directly connected to the drive shaft of a motor 33 which is mounted on a frame 32 attached to the frame members 2-1 of the arcuate frame 2, and such that the clamp arms 6-3 are connected to a nut 35, which is screwed on the threaded rod 34, through links 36 in a manner that the clamp arms 6-3 are rocked about the pivot pin 31 to approach and leave the pipe 1 to be welded in accordance with the forward and backward movements of that nut 35.
  • both the clamp arms 6-3 are so adjusted that they are opened, when the nut 35 is turned toward the motor 33, and closed to clamp the pipe 1 when the nut 35 is moved apart from the motor 33.
  • the control of the motor 33 is performed by means of a push-button switch 37 which is attached to the arcuate frame 2.
  • the running truck 5 is made to run by 180 degrees until the arcuate frame 2 is moved to the back of the pipe so that both the end portions of the frame 2 are positioned to face the side of an operator.
  • the other arcuate frame 3 at the side of the welding unit 4-1 is connected to the partner frame 2, as shown in FIG. 7C.
  • the welding operation is started, as shown in FIG. 7D.
  • the mounting operation according to the prior art usually requires one or two workers.
  • the clamping mechanisms 6 are of electric type, the frame at the side of the running truck can be automatically fixed at such a position that the other frame can be mounted with ease. As a result, the present invention can enjoy an excellent working property.
  • the welding apparatus In case the welding apparatus is to be removed from the pipe, on the other hand, it is fixed at such a position as can be easily disengaged, and the frame at the side of the welding unit is first removed. Then, the running truck 5 is moved to the side of the operator, and the handles 26 are fallen to the opposite side thereby to weaking the compression of the shock absorbing springs. After that, the push-button switch is operated to open the clamp arms 6-3 so that the frame 2 at the side of the running truck is taken out. The removing operation thus far described can be easily and promptly performed similarly to the aforementioned mounting operation.
  • the half-turn welding step is accomplished, as shown in a solid arrow in FIG. 8A, and the welding direction is subsequently reversed, as shown in a broken arrow.
  • the welding direction is likewise reversed (as shown in a broken arrow).
  • the welding unit 4-1 is constructed of a profiling unit 38, a welding torch 39, and rollers 40 for supporting the former components, all of which are well known in the art.
  • the wire feeders 4-2 and 4-3 are arranged at the both sides of and at a predetermined spacing from the welding unit thus constructed, each of which is constructed of a wire reel 41 and a wire delivery roll 42, as shown in FIG. 1.
  • wires 43 which are let off from their feeders 4-2 and 4-3, are fed to the wire inlets 45 of wire feed guides 44-1 and 44-2, which are arranged to have their leading outlets facing forward and backward of the advancing direction of the welding torch 39, as shown in FIG. 6.
  • wire feed guides 44-1 and 44-2 may have their tip heights made adjustable, holders 46-1 and 46-2 for holding the wire feed guides are made vertically movable.
  • the wire feeders are interchanged so that the wire 43 positioned in front of the welding torch 39 may be fed. More specifically, in case the welding torch 39 is advancing in the direction of the solid arrow in FIG. 6, the wire 43 is fed by the wire feed guide 44-2. On the contrary, in case the welding torch 39 is advancing in the direction of the broken arrow, the wire 43 is fed by the wire feed guide 44-1.
  • the running truck 5 since the running truck 5 is so constructed that it can rotate about the shaft 19 and move in the direction of the height through the shock absorbing springs 23, all the vibrations due to the roughnesses on the pipe to be welded can be absorbed, and the spacing between the leading end of the welding torch and the pipe can always be maintained constant.
  • the shock absorbing mechanism is built in the truck mounting portion and since the clamping mechanisms are of the electric type, the circumference of the pipe can be welded satisfactorily and stably, and the welding apparatus itself can be easily and promptly detached so that the working efficiency can be remarkably improved.
  • the multilayered welding operation of excellent wedability and high reliability can be performed in a remarkably high efficiency.
US06/233,576 1980-02-15 1981-02-11 Automatic pipe circumference welding apparatus Expired - Lifetime US4347421A (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP55-18679[U] 1980-02-15
JP1867980U JPS5914052Y2 (ja) 1980-02-15 1980-02-15 パイプの円周自動溶接装置
JP2658980U JPS56131990U (fr) 1980-02-29 1980-02-29
JP55-26589[U] 1980-02-29

Publications (1)

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US4347421A true US4347421A (en) 1982-08-31

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Family Applications (1)

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US06/233,576 Expired - Lifetime US4347421A (en) 1980-02-15 1981-02-11 Automatic pipe circumference welding apparatus

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US (1) US4347421A (fr)
CA (1) CA1152161A (fr)
DE (1) DE3105312C2 (fr)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1985003658A1 (fr) * 1984-02-17 1985-08-29 Evans Pipeline Equipment Company Chariot de soudage
WO1986004281A1 (fr) * 1985-01-29 1986-07-31 Klaus Tesch Dispositif de soudage d'un tuyau cylindrique
US4804813A (en) * 1985-12-10 1989-02-14 Klaus Tesch Welding device for a cylindrical tube
US4936895A (en) * 1989-01-30 1990-06-26 Valeo Neiman Releasable lock with a rotable stator
WO1996022856A1 (fr) * 1994-12-29 1996-08-01 Willems, Peter Procede et dispositif pour souder automatiquement des tuyauteries
US20050087586A1 (en) * 1999-11-03 2005-04-28 Vermaat Technics B.V. Method and device for welding pipes
US20120152398A1 (en) * 2010-12-16 2012-06-21 Air Liquide Industrial U.S. Lp Method for Reduced Cycle Times In Multi-Pass Welding While Providing an Inert Atmosphere to the Welding Zone
EP2805793A4 (fr) * 2012-01-18 2015-11-25 Hyun Dai Heavy Ind Co Ltd Dispositif de support de cadre de guidage
US9517524B2 (en) 2013-11-12 2016-12-13 Lincoln Global, Inc. Welding wire spool support
US9527153B2 (en) 2013-03-14 2016-12-27 Lincoln Global, Inc. Camera and wire feed solution for orbital welder system
US9731385B2 (en) 2013-11-12 2017-08-15 Lincoln Global, Inc. Orbital welder with wire height adjustment assembly
US9770775B2 (en) 2013-11-11 2017-09-26 Lincoln Global, Inc. Orbital welding torch systems and methods with lead/lag angle stop
KR101954939B1 (ko) * 2017-11-01 2019-03-06 삼성중공업 주식회사 배관 슬리브 설치장치
CN109623610A (zh) * 2018-12-22 2019-04-16 田少杰 一种钢管除锈机

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO174242C (no) * 1987-01-29 1994-04-06 Norsk Hydro As Anordning og fremgangsmåte for preparering av rörender og sammensveising av rör
CN115781148B (zh) * 2023-01-06 2023-05-23 江苏菲达宝开电气股份有限公司 一种具有漏焊标记功能的焊接机器人

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3268707A (en) * 1963-10-14 1966-08-23 American Mach & Foundry Mechanism for oscillating the movable heat source of a welding machine
US3910480A (en) * 1974-05-06 1975-10-07 Central Welding Supply Co Circumferential track and band assembly with quick release

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT261362B (de) * 1965-02-27 1968-04-25 Rohrwerke Bitterfeld Veb Ringförmiges Mehrzwerk-Trägergerät

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3268707A (en) * 1963-10-14 1966-08-23 American Mach & Foundry Mechanism for oscillating the movable heat source of a welding machine
US3910480A (en) * 1974-05-06 1975-10-07 Central Welding Supply Co Circumferential track and band assembly with quick release

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1985003658A1 (fr) * 1984-02-17 1985-08-29 Evans Pipeline Equipment Company Chariot de soudage
WO1986004281A1 (fr) * 1985-01-29 1986-07-31 Klaus Tesch Dispositif de soudage d'un tuyau cylindrique
US4804813A (en) * 1985-12-10 1989-02-14 Klaus Tesch Welding device for a cylindrical tube
US4936895A (en) * 1989-01-30 1990-06-26 Valeo Neiman Releasable lock with a rotable stator
WO1996022856A1 (fr) * 1994-12-29 1996-08-01 Willems, Peter Procede et dispositif pour souder automatiquement des tuyauteries
BE1009012A4 (nl) * 1994-12-29 1996-10-01 Willems Peter Werkwijze en inrichting voor het automatisch lassen van buisleidingen.
US5968384A (en) * 1994-12-29 1999-10-19 Peter Willems Process and device for automatically welding pipes
US20050087586A1 (en) * 1999-11-03 2005-04-28 Vermaat Technics B.V. Method and device for welding pipes
US7540401B2 (en) * 1999-11-03 2009-06-02 Vermaat Technics B.V. Method and device for welding pipes
US8662374B2 (en) * 2010-12-16 2014-03-04 Air Liquide Industrial U.S. Lp Method for reduced cycle times in multi-pass welding while providing an inert atmosphere to the welding zone
US20120152398A1 (en) * 2010-12-16 2012-06-21 Air Liquide Industrial U.S. Lp Method for Reduced Cycle Times In Multi-Pass Welding While Providing an Inert Atmosphere to the Welding Zone
US8967450B2 (en) 2010-12-16 2015-03-03 Air Liquide Industrial U.S. Lp Method for reduced cycle times in multi-pass welding while providing an inert atmosphere to the welding zone
EP2805793A4 (fr) * 2012-01-18 2015-11-25 Hyun Dai Heavy Ind Co Ltd Dispositif de support de cadre de guidage
US9409260B2 (en) 2012-01-18 2016-08-09 Hyundai Heavy Industries Co., Ltd. Guide frame support device
US9527153B2 (en) 2013-03-14 2016-12-27 Lincoln Global, Inc. Camera and wire feed solution for orbital welder system
US9770775B2 (en) 2013-11-11 2017-09-26 Lincoln Global, Inc. Orbital welding torch systems and methods with lead/lag angle stop
US9517524B2 (en) 2013-11-12 2016-12-13 Lincoln Global, Inc. Welding wire spool support
US9731385B2 (en) 2013-11-12 2017-08-15 Lincoln Global, Inc. Orbital welder with wire height adjustment assembly
KR101954939B1 (ko) * 2017-11-01 2019-03-06 삼성중공업 주식회사 배관 슬리브 설치장치
CN109623610A (zh) * 2018-12-22 2019-04-16 田少杰 一种钢管除锈机
CN109623610B (zh) * 2018-12-22 2020-10-30 山东金友设备安装工程有限公司 一种钢管除锈机

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Publication number Publication date
DE3105312C2 (de) 1985-01-24
CA1152161A (fr) 1983-08-16
DE3105312A1 (de) 1982-02-04

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